<template>
  <el-row class="home" :gutter="20">
    <!-- 左侧 -->
    <el-col :span="8" style="margin-top: 20px">
      <el-card shadow="hover">
          <div class="user">
            <img src="@/assets/images/user.png" class="user"/>
            <div class="user-info">
                <p class="user-name">Admin</p>
                <p class="user-work">超级管理员</p>
            </div>
          </div>
          <div class="login-info">
            <p>上次登录时间：<span>2024-6-30</span></p>
            <p>上次登录地点：<span>武汉</span></p>
          </div>
      </el-card>
      <el-card shadow="hover" class="table">
        <el-table :data="tableData">
            <el-table-column 
            v-for="(val,key) in tableLabel" 
            :key="key" 
            :prop="key" 
            :label="val"
            >
            </el-table-column>
        </el-table>
      </el-card>
    </el-col>
    <!-- 右侧 -->
    <el-col :span="16" style="margin-top: 20px">
        <!-- 右上 -->
        <div class="num">
            <el-card
            :body-style="{display:'flex',padding:0}"
            v-for="item in countData"
            :key="item.name"
            >
            <component :is="item.icon" class="icons" :style="{background:item.color}"></component>
            <div class="detail">
                <p class="num">￥{{ item.value }}</p>
                <p class="txt">{{ item.name }}</p>
            </div>
            </el-card>
        </div>
        <!-- 右中 -->
         <el-card class="top-echart">
             <div ref="echart" style="height: 280px;"></div>
         </el-card>
         <!-- 右下 -->
          <div class="graph">
            <el-card>
                <div ref="userEchart" style="height: 240px;">

                </div>
            </el-card>
            <el-card>
                <div ref="videoEchart" style="height: 240px;">
                  
                </div>
            </el-card>
          </div>
    </el-col>
  </el-row>
</template>

<script setup>
import { ElCard } from 'element-plus';
import { ref,getCurrentInstance,onMounted,reactive, onRenderTracked } from 'vue';
import * as echarts from "echarts";
const {proxy} = getCurrentInstance()

//这个是折线图和柱状图 两个图表共用的公共配置
const xOptions = reactive({
      // 图例文字颜色
      textStyle: {
        color: "#333",
      },
      legend: {},
      grid: {
        left: "20%",
      },
      // 提示框
      tooltip: {
        trigger: "axis",
      },
      xAxis: {
        type: "category", // 类目轴
        data: [],
        axisLine: {
          lineStyle: {
            color: "#17b3a3",
          },
        },
        axisLabel: {
          interval: 0,
          color: "#333",
        },
      },
      yAxis: [
        {
          type: "value",
          axisLine: {
            lineStyle: {
              color: "#17b3a3",
            },
          },
        },
      ],
      color: ["#2ec7c9", "#b6a2de", "#5ab1ef", "#ffb980", "#d87a80", "#8d98b3"],
      series: [],
})
// 饼状图
const pieOptions = reactive({
  tooltip: {
    trigger: "item",
  },
  legend: {},
  color: [
    "#0f78f4",
    "#dd536b",
    "#9462e5",
    "#a6a6a6",
    "#e1bb22",
    "#39c362",
    "#3ed1cf",
  ],
  series: []
})

const tableData = ref([])
const countData = ref([])
const chartData = ref([])
const observer = ref(null)
const tableLabel = ref({
    name: "课程",
    todayBuy: "今日购买",
    monthBuy: "本月购买",
    totalBuy: "总购买",
})

const getTableData =async () => {
    const data = await proxy.$api.getTableData()
    tableData.value = data.tableData;
}
const getCountData =async () => {
    const data = await proxy.$api.getCountData()
    countData.value = data;
}
const getChartData =async () => {
    const {orderData, userData, videoData} = await proxy.$api.getChartData()
    // 对第一个图表进行x轴和series赋值
    xOptions.xAxis.data = orderData.date
    xOptions.series = Object.keys(orderData.data[0]).map(val=>({
        name:val,
        data:orderData.data.map(item => item[val]),
        type:'line',
    }))
    const firstEcharts = echarts.init(proxy.$refs['echart'])
    firstEcharts.setOption(xOptions)

    // 对第二个图表进行x轴和series赋值
  xOptions.xAxis.data = userData.map(item=>item.date)
  xOptions.series = [
    {
      name:'新增用户',
      data:userData.map(item=>item.new),
      type:'bar'
    },
    {
      name:'活跃用户',
      data:userData.map(item=>item.active),
      type:'bar'
    }
  ]
    const secondEcharts = echarts.init(proxy.$refs['userEchart'])
    secondEcharts.setOption(xOptions)

    // 对饼状图渲染
    pieOptions.series = [
      {
        data:videoData,
        type:'pie'
      }
    ]
    const thirdEcharts = echarts.init(proxy.$refs['videoEchart'])
    thirdEcharts.setOption(pieOptions)
}

// 监听页面变化
observer.value = new ResizeObserver(() => {
  firstEcharts.resize()
  secondEcharts.resize()
  thirdEcharts.resize()
})

// 容器存在
if(proxy.$refs['echart']){
  observer.value.observe(proxy.$refs['echart'])
}

onMounted(() => {
    getTableData()
    getCountData()
    getChartData()
})
</script>

<style scoped lang="less">
.home{
    height: 100%;
    overflow: hidden;
    .user{
        display: flex;
        align-items: center;
        border-bottom: 1px solid #ccc;
        margin-bottom: 20px;
        img{
            width: 150px;
            height: 150px;
            border-radius: 50%;
            margin-right: 40px;

        }
        .user-name{
            line-height: 40px;
            font-size: 30px;
        }
        .user-work{
            color: #999;
        }
    }
    .login-info{
        p{
            line-height: 30px;
            font-size: 14px;
            color: #999;
            span{
                color: #666;
                margin-left: 60px;
            }
        }
    }
    .table{
        margin-top: 20px;
    }
    .num{
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        .el-card{
            width: 32%;
            margin-bottom: 20px;
        }
        .icons{
            width: 80px;
            height: 80px;
            font-size: 30px;
            text-align: center;
            line-height: 80px;
            color: #fff;
        }
        .detail{
            margin-left: 15px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            .num{
                font-size: 30px;
                margin-bottom: 10px;
            }
            .txt{
                font-size: 15px;
                text-align: center;
                color: #999;
            }
        }
    }
    .graph{
      margin-top: 20px;
      display: flex;
      justify-content: space-between;
      .el-card{
        width: 48%;
        height: 260px;
      }
    }
}
</style>